code: def cosine_sim(self, x1, x2, dim=1, eps=1e-8):
      ip = torch.mm(x1, x2.t())
      w1 = torch.norm(x1, 2, dim)
      w2 = torch.norm(x2, 2, dim)
      return ip / torch.ger(w1, w2).clamp(min=eps)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn import Parameter
label_desc: Use image node_id 3 for calling the network_29layers_cosface obj's underlying member method code with example usage: obj.cosine_sim(x1, x2, dim, eps) and returns: unknown